Bought 2 of these for my 2 ,2 ,passenger lifts worked ok 1-2 years ,maybe 50 launches and retrivals. Then nylon rollers all wore out ,so I replaced. Then big graphite looking rollers wore out on inside causing a lot of friction, very hard to crank up. I'm stout 250 lbs. and it took all my strength with both arms. Finally got loose all over, wobbled about 12-18" when loaded,got afraid boat would fall off. Real Junk ,Avoid this.